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252891825 = 35210731513
BaseRepresentation
bin11110001001011…
…01001010110001
3122121212020100220
433010231022301
51004220014300
641032203253
76160354644
oct1704551261
9577766326
10252891825
1111a82940a
1270839529
1340515a44
142582da5b
1517305da0
hexf12d2b1

252891825 has 24 divisors (see below), whose sum is σ = 422035488. Its totient is φ = 133610880.

The previous prime is 252891823. The next prime is 252891833. The reversal of 252891825 is 528198252.

252891825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252891825 - 21 = 252891823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252891823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7732 + ... + 23781.

It is an arithmetic number, because the mean of its divisors is an integer number (17584812).

Almost surely, 2252891825 is an apocalyptic number.

252891825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

252891825 is a deficient number, since it is larger than the sum of its proper divisors (169143663).

252891825 is a wasteful number, since it uses less digits than its factorization.

252891825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31633 (or 31628 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The square root of 252891825 is about 15902.5729050365. The cubic root of 252891825 is about 632.3801998833.

The spelling of 252891825 in words is "two hundred fifty-two million, eight hundred ninety-one thousand, eight hundred twenty-five".

Divisors: 1 3 5 15 25 75 107 321 535 1605 2675 8025 31513 94539 157565 472695 787825 2363475 3371891 10115673 16859455 50578365 84297275 252891825